Which part of the cell contains two layers of phospholipids with proteins scattered throughout

The answer is the cell membrane Because the cell membrane is made up of two layer of phospholipids and the proteins molecules are also attached with them, through elctro-statical charge.  

The protein molecules can be found in between the lipids molecules of the same layer or at the peripheri of the membrane.  

Phospholipid bilayer is not an any kind of part of a cell, but it is an content of the part of the cell eg: Cell membrane etc

Hope I helped.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.